• 8 Music Library (Mills)

• 9 Books
• 6 Sound Recordings

• 2 Vinyl Records

• 13 Operas
• 3 Wagner, Richard, 1813-1883
• 2 Librettos
• 1 Ring des Nibelungen. Götterdämmerung
• 1 Ring des Nibelungen. Rheingold
• 1 Ring des Nibelungen. Siegfried
• 1 Valkyries (Norse mythology)

• 11 Porter, Andrew, 1928-2015
• 6 Goodall, Reginald
• 5 Hunter, Rita
• 5 Remedios, Alberto
• 4 Porter, Andrew, 1928-
• 3 Bailey, Norman, 1933-
• 3 Curphey, Margaret
• 3 English National Opera. Orchestra
• 3 Grant, Clifford
• 3 Hammond-Stroud, Derek, 1926-2012
• 2 Dempsey, Gregory
• 2 English National Opera
• 2 Haugland, Aage, 1944-2000
• 2 Pring, Katherine
• 2 Sadler's Wells Opera Company
• 1 Bailey, Norman, 1933-2021
• 1 Belcourt, Emile
• 1 Besch, Anthony
• 1 Collins, Anne, 1943-2009
• 1 Csonka, Paul
• 1 Curphey, Margaret, 1938-
• 1 Forte, Allen
• 1 Geliot, Michael
• 1 Hermand, Jost

• 6 German

• 9 Librettos
• 2 Operas
• 1 Drama
• 1 librettos (documents for music)

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